Komatsu PC290LC-6K Operation & Maintenance Manual page 37

Hydraulic excavator
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WARNING: For reasons of safety,
always follow these safety precautions.
PRECAUTIONS WITH BATTERY
• When repairing the electrical system or when carrying out electrical welding, remove the negative (-)
terminal of the battery to stop the flow of current.
HANDLING HIGH-PRESSURE HOSES
• Do not bend high-pressure hoses or hit them with hard objects. Do not use any bent or cracked piping,
tubes or hoses. They may burst during use.
• Always repair any loose or broken fuel hoses or oil hoses. If fuel or oil leaks, it may cause a fire.
PRECAUTIONS WITH HIGH PRESSURE OIL
• Do not forget that the work equipment circuits are always under pressure.
• Do not add oil, drain oil, or carry out maintenance or inspection before completely releasing the internal
pressure.
• If oil is leaking under high pressure from small holes, it is dangerous if the jet of high-pressure oil hits your
skin or enters your eyes. Always wear safety glasses and thick gloves, and use a piece of cardboard or a
sheet of wood to check for oil leakage.
• If you are hit by a jet of high-pressure oil, consult a doctor immediately for medical attention.
8. PRECAUTIONS FOR OPERATION
1-25

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